This product is a colorless & transparent liquid, made of nano silver that particle size is less than 2nm through nanotechnology. It is widely applicable for various fabrics including cotton, blending fabric, chemical fiber, non-woven fabric, leather, etc for washing-resistance antimicrobial purpose. Textile after treating will not affect origin handling, color or state, and the antimicrobial effect can maintain above 99% even after washing 50 times.